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Finding the Fourth Proportional to 362.62, 499.41 and 313.48

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Solution

The fourth proportional to 362.62, 499.41 and 313.48 is: 431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.62 : 499.41 = 313.48 : x
  2. Step 2: Convert to fraction form
    362.62/499.41 = 313.48/x
  3. Step 3: Cross multiply
    362.62x = 499.41 × 313.48
  4. Step 4: Simplify right side
    362.62x = 156,555.05
  5. Step 5: Solve for x
    x = 156,555.05/362.62
  6. Step 6: Final answer
    x = 431.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.